Revealing mistake: When Hightower is in the Monster Truck you can see that a white stuntman is actually driving it in one of the shots.
Revealing mistake: The scene where Eugene Hunt is loading his weapon in the bathroom there is a very clear shot of him loading rounds and the primers on every round are dented. Indicating that the round has already been fired.
Revealing mistake: When the Joker is having the party with all the balloons, Vicky Vale tries to escape from the gas by getting into a car. If you look at the back window while she is driving off, the window is rolled down, which would have led to her death, not to mention motor vehicles are not air tight to begin with.
Revealing mistake: When the windshield is shot up, Riggs knocks the glass off the car. But interior shots that follow show Riggs' tall, fluffy hair isn't moving at all in the high-speed air rushing into the car. (00:02:15)
Revealing mistake: Watch Andy Garcia's decapitation scene. His head starts to come off before the sword makes contact with his neck. Slow motion helps but is not required.
Revealing mistake: Double Deuce is in Jasper, MO, but this was filmed in California. After Dalton tells Tilghman that Brad Wesley was not afraid, it cuts to Dalton driving. In the background, at the left there's a sign for "Magic Mountain Pkwy" and at the right the California State Route 126 sign that reads "126 West, Ventura." After the Ford dealership is destroyed, another sign in the background reads "Los Angeles, Bakersfield" (the I-5 North to Bakersfield and I-5 South to Los Angeles). (01:25:55)
Revealing mistake: When Lupe Lamore puts Sanchez's iguana down on the table near the end of the movie, you can see the iguana bounce slightly. Also, it isn't breathing.
Revealing mistake: When Eddie shoots the cashier at the Wady liquor store he falls backwards into a shelf with whiskey bottles. You hear some bottles break and see some splinters flying, and then there comes a Niagara-style whiskeyfall pouring over the shelf that must have come from a large reservoir behind. (00:30:40)
Revealing mistake: When Dave and Walley are running with a car, Walley says that he heard some shots. Dave replies that he didn't hear anything, but as you know Dave is deaf, and he reads Walley's lips each time he speaks. In this scene, he wasn't looking at him, but answered. (00:47:45)
Revealing mistake: When Cash stuffs the grenade in the trousers of the guy with the ponytail and throws him down the stairs, you can see that the explosion doesn't come from the grenade but from the hall on the right side of the stairs.
Revealing mistake: After Dooley and Jerry Lee were shot at and the window was blown out in Dooley's Mustang, they give chase to the Mercedes, look carefully at the "dog". In two shots in the chase sequence, you can see it is a fake dog and looks very much like the fake dog in the bar scene lunge. (00:56:30)
Revealing mistake: In the fight scene in the Alley you can tell in all the shots from behind they woman is a much younger and smaller stunt double. (00:22:30)
Revealing mistake: When Briar is reloading cartridges in the flop house, he's removing powder from an already spent shotgun shell. The primer is indented.